Extensible infrastructure for representing networks including virtual machines

ABSTRACT

One or more embodiments provide an extensible user interface for navigating a graph in a tabular format for which the extensible user interface is arranged in a hierarchy of views. The hierarchy includes an entry point level having at least one extension added by an application, wherein data is displayed when the extensible user interface is initially accessed by the user. The hierarchy further includes an inventory level having at least one extension added by the application, wherein data is displayed when the user selects an extension at the inventory level. Another level of the hierarchy is a category extension level having at least one extension added by an application, wherein data is displayed when the user focuses the extensible user interface on a node displayed by an extension added at the inventory level.

BACKGROUND

Software applications, such as virtual machines (VMs), may be executedby a group, or “cluster,” of host computing devices. Each VM creates anabstraction of physical computing resources, such as a processor andmemory, of the host executing the VM and executes a “guest” operatingsystem, which, in turn, executes one or more software applications. Theabstracted resources may be functionally indistinguishable from theunderlying physical resources to the guest operating system and softwareapplications.

At least some host computing devices are connected together to form oneor more networks. In addition, at least some known cloud computingand/or datacenter environments include large numbers of host computingdevices, and each computing device may include a plurality of VMs. Cloudcomputing and/or datacenter environments also include a plurality ofnetwork switches, datastores, and other devices or systems that supportthe host computing devices and VMs.

To ensure that the computing devices and/or other devices within a cloudcomputing environment and/or a datacenter operate efficiently and/or areconfigured properly, software management tools are often used. Suchsoftware management tools often display the computing devices and/orother devices in a tree or graphical view for monitoring. However, withlarge numbers of computing devices present in a cloud computing and/ordatacenter environment, a tree view may become inconvenient, requiring auser to horizontally and/or vertically scroll through large sections ofthe tree within a relatively small application window. In addition,large numbers of computing devices and/or other devices may cause agraphical view to be visually convoluted and/or may require excessivecomputing resources to display the devices.

In addition, at least some known software management tools display dataassociated with computing devices in a segregated manner. In otherwords, the data is displayed only from the context of the applicationcurrently being accessed by the user. If the user wants to access otherdata available for a computing device that is supplied by anotherapplication, the user must exit the first application and access thesecond application, or must otherwise manually switch betweenapplications. Accordingly, users may experience difficulty inidentifying and/or diagnosing issues associated with computing devices.

SUMMARY

One or more embodiments described herein provide an extensible userinterface for navigating a graph in a tabular format for which theextensible user interface is arranged in a hierarchy of views. Thehierarchy includes an entry point level having at least one extensionadded by an application, wherein data of the extension is displayed in adisplay of a computing device to a user when the extensible userinterface is initially accessed by the user. The hierarchy furtherincludes an inventory level having at least one extension added by theapplication, wherein data of this extension is displayed to the userwhen the user selects an extension at the entry point levelcorresponding to the extension at the inventory level. Another level ofthe hierarchy is a category extension level having at least oneextension added by an application, wherein data of this extension isdisplayed to the user when the user focuses the extensible userinterface on a node displayed by an extension added at the inventorylevel.

This summary introduces a selection of concepts that are described inmore detail below. This summary is not intended to identify essentialfeatures, nor to limit in any way the scope of the claimed subjectmatter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of an exemplary computing device.

FIG. 2 is a block diagram of virtual machines that are instantiated on acomputing device, such as the computing device shown in FIG. 1.

FIG. 3 is a graphical view of an exemplary extensible network systemthat includes a plurality of host computing devices shown in FIG. 1.

FIG. 4 is a block diagram of an exemplary extensible infrastructure thatmay be used with the network system shown in FIG. 3.

FIG. 5 is a block diagram of an exemplary extensible user interfacehierarchy that may be used with the infrastructure shown in FIG. 4.

FIGS. 6-11 are exemplary screen captures of a user interface provided bythe infrastructure shown in FIG. 4.

FIG. 12 is a flowchart of an exemplary method for installing anapplication within the infrastructure shown in FIG. 4.

FIGS. 13-15 are additional screen captures of the user interfaceprovided by the infrastructure shown in FIG. 4.

FIG. 16 is a block diagram of an exemplary application including aplurality of computer-executable components.

DETAILED DESCRIPTION

Embodiments described herein provide an extensible infrastructure forrepresenting a network system including a plurality of system objectssuch as computing devices and/or virtual machines (VMs). Theinfrastructure includes, in some embodiments, an application model, anobject model, a resource model, and a user interface. In otherembodiments, the infrastructure may include additional or fewerelements. The application model defines a hierarchical set of views toenable an application to navigate from an application entry point to anode representing a system object. The data model provides a set ofviews for representing data associated with nodes. In addition, the datamodel enables data associated with a node to be received from a firstapplication being accessed, and receive data associated with the nodefrom a second application without switching a focus from the firstapplication or the node.

Accordingly, when an application views or displays data associated witha node, the application does not need to duplicate data from otherapplications for the node. Instead, the infrastructure enables a user toaccess the singular version of the node as it is shared betweenapplications. In addition, administrators or users may access all datagathered for a node from a plurality of applications without having toswitch between applications. The infrastructure and user interface areextensible, allowing an administrator or developer to add furtherextensions and interfaces to extend the functionality of theinfrastructure and user interface in a customized manner.

FIG. 1 is a block diagram of an exemplary computing device 100.Computing device 100 includes a processor 102 for executinginstructions. In some embodiments, computer-executable instructions arestored in a memory 104 for performing one or more of the operationsdescribed herein. Memory 104 is any device allowing information, such asexecutable instructions, configuration options (e.g., threshold values),and/or other data, to be stored and retrieved. For example, memory 104may include one or more computer-readable storage media, such as one ormore random access memory (RAM) modules, flash memory modules, harddisks, solid state disks, and/or optical disks.

Computing device 100 also includes at least one presentation device 106for presenting information to a user 108. Presentation device 106 is anycomponent capable of conveying information to user 108. Presentationdevice 106 may include, without limitation, a display device (e.g., aliquid crystal display (LCD), organic light emitting diode (OLED)display, or “electronic ink” display) and/or an audio output device(e.g., a speaker or headphones). In some embodiments, presentationdevice 106 includes an output adapter, such as a video adapter and/or anaudio adapter. An output adapter is operatively coupled to processor 102and configured to be operatively coupled to an output device, such as adisplay device or an audio output device.

The computing device 100 may include a user input device 110 forreceiving input from user 108. User input device 110 may include, forexample, a keyboard, a pointing device, a mouse, a stylus, a touchsensitive panel (e.g., a touch pad or a touch screen), a gyroscope, anaccelerometer, a position detector, and/or an audio input device. Asingle component, such as a touch screen, may function as both an outputdevice of presentation device 106 and user input device 110.

Computing device 100 also includes a network communication interface112, which enables computing device 100 to communicate with a remotedevice (e.g., another computing device 100) via a communication medium,such as a wired or wireless packet network. For example, computingdevice 100 may transmit and/or receive data via network communicationinterface 112. User input device 110 and/or network communicationinterface 112 may be referred to as an input interface 114 and may beconfigured to receive information, such as configuration options (e.g.,threshold values), from a user.

Computing device 100 further includes a storage interface 116 thatenables computing device 100 to communicate with one or more datastores.In exemplary embodiments, storage interface 116 couples computing device100 to a storage area network (SAN) (e.g., a Fibre Channel network)and/or to a network-attached storage (NAS) system (e.g., via a packetnetwork). The storage interface 116 may be integrated with networkcommunication interface 112.

FIG. 2 depicts a block diagram of virtual machines 235 ₁, 235 ₂ . . .235 _(N) that are instantiated on a computing device 100, which may bereferred to as a “host.” Computing device 100 includes a hardwareplatform 205, such as an x86 architecture platform. Hardware platform205 may include processor 102, memory 104, network communicationinterface 112, user input device 110, and other input/output (I/O)devices, such as a presentation device 106 (shown in FIG. 1). Avirtualization software layer, also referred to hereinafter as ahypervisor 210, is installed on top of hardware platform 205.

The virtualization software layer supports a virtual machine executionspace 230 within which multiple virtual machines (VMs 235 ₁-235 _(N))may be concurrently instantiated and executed. Hypervisor 210 includes adevice driver layer 215, and maps physical resources of hardwareplatform 205 (e.g., processor 102, memory 104, network communicationinterface 112, and/or user input device 110) to “virtual” resources ofeach of VMs 235 ₁-235 _(N) such that each of VMs 235 ₁-235 _(N) has itsown virtual hardware platform (e.g., a corresponding one of virtualhardware platforms 240 ₁-240 _(N)). Each virtual hardware platformincludes its own emulated hardware (such as a processor 245, a memory250, a network communication interface 255, a user input device 260 andother emulated I/O devices in VM 235 ₁).

In some embodiments, memory 250 in first virtual hardware platform 240 ₁includes a virtual disk that is associated with or “mapped to” one ormore virtual disk images stored in memory 104 (e.g., a hard disk orsolid state disk) of computing device 100. The virtual disk imagerepresents a file system (e.g., a hierarchy of directories and files)used by first virtual machine 235 ₁ in a single file or in a pluralityof files, each of which includes a portion of the file system. Inaddition, or alternatively, virtual disk images may be stored in memory104 of one or more remote computing devices 100, such as in a storagearea network (SAN) configuration. In such embodiments, any quantity ofvirtual disk images may be stored by the remote computing devices 100.

Device driver layer 215 includes, for example, a communication interfacedriver 220 that interacts with network communication interface 112 toreceive and transmit data from, for example, a local area network (LAN)connected to computing device 100. Communication interface driver 220also includes a virtual bridge 225 that simulates the broadcasting ofdata packets in a physical network received from one communicationinterface (e.g., network communication interface 112) to othercommunication interfaces (e.g., the virtual communication interfaces ofVMs 235 ₁-235 _(N)). Each virtual communication interface may beassigned a unique virtual Media Access Control (MAC) address thatenables virtual bridge 225 to simulate the forwarding of incoming datapackets from network communication interface 112. In an embodiment,network communication interface 112 is an Ethernet adapter that isconfigured in “promiscuous mode” such that all Ethernet packets that itreceives (rather than just Ethernet packets addressed to its ownphysical MAC address) are passed to virtual bridge 225, which, in turn,is able to further forward the Ethernet packets to VMs 235 ₁-235 _(N).This configuration enables an Ethernet packet that has a virtual MACaddress as its destination address to properly reach the VM in computingdevice 100 with a virtual communication interface that corresponds tosuch virtual MAC address.

Virtual hardware platform 240 ₁ may function as an equivalent of astandard x86 hardware architecture such that any x86-compatible desktopoperating system (e.g., Microsoft WINDOWS brand operating system, LINUXbrand operating system, SOLARIS brand operating system, NETWARE, orFREEBSD) may be installed as guest operating system (OS) 265 in order toexecute applications 270 for an instantiated VM, such as first VM 235 ₁.Virtual hardware platforms 240 ₁-240 _(N) may be considered to be partof virtual machine monitors (VMM) 275 ₁-275 _(N) which implement virtualsystem support to coordinate operations between hypervisor 210 andcorresponding VMs 235 ₁-235 _(N). Those with ordinary skill in the artwill recognize that the various terms, layers, and categorizations usedto describe the virtualization components in FIG. 2 may be referred todifferently without departing from their functionality or the spirit orscope of the disclosure. For example, virtual hardware platforms 240₁-240 _(N) may also be considered to be separate from VMMs 275 ₁-275_(N), and VMMs 275 ₁-275 _(N) may be considered to be separate fromhypervisor 210. One example of hypervisor 210 that may be used in anembodiment of the disclosure is included as a component in VMware's ESXbrand software, which is commercially available from VMware, Inc.

FIG. 3 is a graphical view of an exemplary extensible network system 300that includes a plurality of host computing devices 100 (shown inFIG. 1) and/or VMs 235 ₁-235 _(N) (shown in FIG. 2) that arecommunicatively coupled together. In an embodiment, network system 300represents a virtual and/or physical datacenter executing on one or morecomputing devices 100 and/or VMs 235 ₁-235 _(N).

In an embodiment, system 300 includes a plurality of nodes 302 that areeach representative of at least one system object. The system objectsmay include one or more computing devices 100, VMs 235 ₁-235 _(N),network switches (not shown), datastores (not shown), and/or any otherresource or device. Nodes 302 may be grouped by, or included within, oneor more node types (not shown) and are related to each other by one ormore edges 304. In addition, as described more fully herein, nodes 302and node types are extensible such that an application may add new nodes302 and/or node types to system 300 and/or nodes 302.

Each edge 304 represents a relationship or common characteristic of apair of nodes 302. Edges 304 may include, without limitation, aparent-child relationship, a physical relationship (e.g., two VMs 235₁-235 _(N) may be instantiated within the same host computing device 100and/or two computing devices 100 may be physically connected together),a common problem or error that each node 302 is experiencing, a commonnode type shared between nodes 302, and/or any other relationship thatenables system 300 to function as described herein. In an embodiment,edges 304 may be grouped or defined by one or more edge categories (notshown in FIG. 3). In addition, as described more fully herein, edges 304and edge categories are extensible such that an application may add newedges 304 and/or edge categories to system 300 and/or nodes 302.

In an embodiment, a plurality of applications 306 ₁-306 _(N) monitorsand/or manages nodes 302 within system 300. Each application 306 ₁-306_(N) monitors and/or manages at least a subset 308 of nodes 302 withinsystem 300 such that each application 306 ₁-306 _(N) has or defines aview and/or a perspective for each node 302 within subset 308.Accordingly, an application boundary or scope 310 is defined by, orincludes, subset 308 of nodes 302 within boundary 310. Morespecifically, each application 306 ₁-306 _(N) may identify or define oneor more edge categories and/or node types that application 306 ₁-306_(N) will manage and/or monitor, and subset 308 includes each node 302that satisfies the edge categories and/or node types. The perspectiveincludes the data, actions, and/or configuration settings for a node302. In addition, application boundary 310 of one application 306 ₁ mayoverlap an application boundary 310 of another application 306 ₂ orapplications 306 ₂-306 _(N) such that subsets 308 of applications 306₁-306 _(N) may overlap, or share common nodes 302. Accordingly, eachapplication 306 ₁-306 _(N) may have a different perspective of a node302 common to other applications 306 ₁-306 _(N) such that eachapplication 306 ₁-306 _(N) may include a different amount and/or type ofdata, actions, and/or configuration settings for node 302.

In an embodiment, applications 306 ₁-306 _(N) may include, withoutlimitation, vSphere, vCloud, View, Virtual Infrastructure (VI), VMwareUpdate Manager (VUM) and/or Site Recovery Manager (SRM) brand software,which are available from VMware, Inc. Alternatively or additionally,applications 306 ₁-306 _(N) may include one or more third party and/oruser-defined applications.

In some embodiments, a node 302 that currently is the focus (or is incontext) of the application 306 ₁-306 _(N) being accessed is an anchornode 302. Nodes 302 that share one or more edges 304 with (i.e., arerelated to) anchor node 302 are related nodes 302.

FIG. 4 is a block diagram of an exemplary extensible virtual machineapplication infrastructure 401 that may be used to monitor and/or managesystem 300 (shown in FIG. 3). More specifically, applications 306 ₁-306_(N) (shown in FIG. 3) may “plug into,” or integrate with, applicationinfrastructure 401 using one or more extensions (not shown) to monitorand/or manage nodes 302 (shown in FIG. 3) of system 300. FIG. 5 is ablock diagram of an exemplary extensible user interface hierarchy 500that may be used with infrastructure 401. FIGS. 6-11 are exemplaryscreen captures of a user interface 402 including a plurality of viewsimplemented by applications 306 ₁-306 _(N) (shown in FIG. 3) usinginfrastructure 401.

In an embodiment, application infrastructure 401 and user interface 402(and associated node information and views) are implemented and/orexecuted by one or more computing devices 100. For example,infrastructure 401 and user interface 402 are implemented by a pluralityof computer-executable instructions and/or components stored within amemory, such as memory 104 or memory 250, and the instructions areexecuted by a processor, such as processor 102 or processor 245 (allshown in FIG. 2) to perform the functions described herein. In addition,user interface 402 is displayed to a user by presentation device 106 andinput from a user is received by user input device 110 (both shown inFIG. 1).

Referring again to FIG. 4, in an embodiment, infrastructure 401 includesan application model 404, an object model 406, a resource model 408, anduser interface 402. Each model 404, 406, and 408 and/or user interface402 includes and/or defines templates, application programminginterfaces (APIs), programming objects and components, user interfaces,and/or any other data and/or instructions that enables infrastructure401 to function as described herein.

As described more fully herein, user interface 402 includes a pluralityof views (not shown in FIG. 4) for managing and monitoring nodes 302.The views may be defined by, and/or provided by, application model 404,object model 406, and/or applications 306 ₁-306 _(N).

Resource model 408 defines a plurality of resource node types, such asphysical resource nodes (also known as “backing nodes or objects”),virtual resource nodes, virtual consumer nodes, and container nodes. Aphysical resource node provides a resource. For example, a disk orstorage area network (SAN) provides storage resources. A virtualresource node provides a layer of abstraction on top of the physicalresource. For example, resource pools abstract central processing units(CPUs) and memory, datastores abstract storage disks, and a VMwareDistributed Switch (vDS) brand software abstracts physical networkinterface cards (NICs). The resource abstraction may providecapabilities that cannot be assigned to the physical resource directly,like load balancing across multiple physical resources. A virtualconsumer node, such as a VM 235 ₁-235 _(N), consumes a virtual resource,and container nodes organize or categorize other nodes.

Application model 404 defines an extensible hierarchy of views (shown inFIG. 5) that are exposed to applications 306 ₁-306 _(N) for applications306 ₁-306 _(N) to access through one or more application extensions orplugins (also referred to as “view extensions” or “user interfaceextensions”). User interface 402 includes data from the objects and/orextensions of the hierarchy and presents the data, extensions, and/orviews to a user. In addition, the views are extensible such thatapplications 306 ₁-306 _(N) may incorporate additional data and/oractions into views. Application model 404 enables one or moreapplications 306 ₁-306 _(N) to add data associated with applications 306₁-306 _(N) to existing task and feature areas of application modelviews, instead of building out separate sub-applications withinapplications 306 ₁-306 _(N). For example, if an application 306 ₁ showsdata about a node 302, that application 306 ₁ may add the data to theexisting view for that node 302. If an application 306 ₁ must exposeconfiguration settings for services provided by application 306 ₁, suchas electronic mail (email) or session management, that application 306 ₁may add controls to a general administration or settings portion of theview. If an application 306 ₁ provides new nodes 302, data, use cases,and actions instead of augmenting an existing node 302, application 306₁ is also enabled to provide one or more filters, views, and/orinventories that represent the perspective of application 306 ₁ withrespect to the subset 308 of nodes 302 (also known as an “inventory”)within application boundary 310.

In an embodiment, application model 404 enables user interface 402 tocentralize data, settings, and actions (hereinafter referred to as “nodeinformation”) associated with nodes 302 such that users (throughapplications 306 ₁-306 _(N)) are able to configure settings for allapplications 306 ₁-306 _(N) in one place, view all issues on a managednode 302 from one view, and the like. In addition, application model 404reduces duplication between different applications 306 ₁-306 _(N).Instead of implementing multiple management, monitoring, oradministration user interfaces or views, applications 306 ₁-306 _(N) canadd data to the existing user interface 402 (e.g., to one or more views)defined by application model 404.

Referring to FIG. 5, user interface 402 is arranged or implemented inone or more hierarchies 500 of views. In an embodiment, hierarchy 500includes a plurality of levels 502, such as an entry point 504, aninventory level 506, a node level 507, a category extension level 508,and/or an application-specific extension level 510. Each level 502 ofhierarchy 500 includes its own views of nodes 302, edge categories,and/or system 300. In addition, applications 306 ₁-306 _(N) interfacewith, or extend, hierarchy 500 by inserting or installing an applicationextension (not shown) at one or more levels of hierarchy 500. Eachapplication 306 ₁-306 _(N) may include a separate hierarchy 500, and/ormay be at least partially integrated with a hierarchy 500 of anotherapplication 306 ₁-306 _(N).

In some embodiments, the term “extend” refers to augmenting orincreasing a functionality of a component, device, or system. Inaddition, in some embodiments, the term “view” refers to a display, suchas a window, tab, portlet, and/or any other display that enables anapplication 306 ₁-306 _(N) or another program or component to presentgraphical data and/or text to a user. In an embodiment, views defined byapplication model 404 and/or object model 406 are displayed in a portionof user interface 402.

Each application 306 ₁-306 _(N) may extend infrastructure 401 and/oruser interface 402 to define an individual entry point 504 for accessingsystem 300 and/or initiating a workflow. Alternatively, an application306 ₁ may not include an entry point 504. For example, an application306 ₁ may only be configured to perform actions on nodes 302, and maynot include views associated with nodes 302, or the application 306 ₁may only provide additional data within preexisting views provided byother applications 306 ₂-306 _(N).

In an embodiment, inventory level 506 includes one or more inventories512 that each identifies a plurality of nodes 302 related to an anchornode 302 by one or more edges 304. In addition, nodes 302 are groupedtogether by edge categories. Applications 306 ₁-306 _(N) may extendinventory level 506 by defining one or more application-specificinventories 512 and/or defining one or more application-specific edges304 and/or node types. Selecting one or more nodes 302 or edgecategories causes user interface 402 to display a view associated withthe node 302 or edge category.

Node level 507 includes a selected or focused node 302 (also known as ananchor node). When a node 302 is selected from inventory level 506 (orfrom another level 502), data and/or one or more views associated withnode 302 are displayed by user interface 402.

Category extension level 508 includes one or more category views 514defined by object model 406, such as a summary view 516, a monitor view518, a manage view 520, a related items view 522, and/or any other view.In an embodiment, category views 514 are associated with, and displaydata associated with, a node 302 selected at node level 507. Anapplication 306 ₁ may extend category extension level 508 by insertingor installing an extension that adds data, configuration settings,and/or actions specific to application 306 ₁ into one or more categoryviews 514 of category extension level 508.

Application-specific extension level 510 includes one or moreapplication-specific views 524 defined by object model 406 and/orapplications 306 ₁-306 _(N). More specifically, eachapplication-specific view 524 of application-specific extension level510 is associated with, and/or included within, a category view 514 ofcategory extension level 508. An application 306 ₁ may extendapplication-specific extension level 510 by inserting or installing anextension that adds data, configuration settings, and/or actionsspecific to application 306 ₁ into one or more application-specificviews 524 of application-specific extension level 510.

During operation, a user navigates through hierarchy 500 of views usinga navigation panel (not shown in FIG. 5) of user interface 402. As theuser navigates to category extension level 508 and/orapplication-specific extension level 510 of hierarchy 500, one or moreassociated category views 514 and/or application-specific views 524 aredisplayed to the user. In some embodiments, during navigation, data andviews from multiple applications 306 ₁-306 _(N) are displayedsimultaneously in a data panel (shown in FIG. 6).

Referring to FIG. 6, application model 404 provides a manage and monitorinterface 601 in which applications 306 ₁-306 _(N) may plug into to addone or more application-specific views (not shown) for the managementand/or monitoring of nodes 302 or application configuration settings.Manage and monitor interface 601 is positioned in a first, ornavigation, panel 602 of user interface 402.

In an embodiment, application model 404 enables applications 306 ₁-306_(N) to define entry points 504 into system 300. Manage and monitorinterface 601 includes one or more links to entry points 504 innavigation panel 602. Manage and monitor interface 601 enablesapplications 306 ₁-306 _(N) to access and/or expose data, configurationsettings, and/or actions (i.e., node information) for nodes 302, andenables such node information to be received from other applications 306₂-306 _(N) while in the context of a currently-focused application 306₁. The node information is displayed in a second, or data, panel 604 ofuser interface 402.

Referring to FIG. 7, a user may navigate hierarchy 500 of views fornodes 302 using navigation panel 602. More specifically, the user mayselect an entry point 504 to list or display one or more inventories 512for the application 306 ₁ selected by entry point 504. For example, asillustrated in FIG. 7, the user may select Virtual Infrastructure (VI)entry point 702 to focus on the VI application 306 ₈ and to displayinventories 512 associated with VI application 306 ₈. Inventories 512may include one or more groups of overviews or dashboards 704, nodeinventories 706, third-party application extensions 708, and/or customviews or queries 710. Node inventories 706 display inventories of nodes302 listed by edge categories 712. More specifically, edge categories712 are listed based on, and determined by, the node type. In addition,edge categories 712 of node inventory 706 may be selected to move to alower level of hierarchy within navigation panel 602 to display andfocus on a node 302 within node inventory 706.

Application model 404 may also define an administration or services view(not shown) that enables applications 306 ₁-306 _(N) to plug into tooffer configurations for services specific to applications 306 ₁-306_(N), such as database connections, polling rates, and the like.Additionally, application model 404 may define an application-specificview (not shown) that enables applications 306 ₁-306 _(N) to add one ormore views to offer application-specific user preferences and/or anyother view that enables application model 404 to function as describedherein.

Object model 406 defines a template for nodes 302 that arerepresentative of system objects. More specifically, object model 406categorizes node information such that each application 306 ₁-306 _(N)may provide different aspects or perspectives of node information, andmay provide new node types and/or edge categories 712, while maintaininga substantially uniform interface and display for the node information.

Referring to FIG. 8, a plurality of object model views 801 is defined byobject model 406 for nodes 302, and are positioned and displayed by userinterface 402 within data panel 604 at a category extension level 508.In an embodiment, object model views 801 include, or are displayedwithin, a plurality of windows, menus, or tabs, such as a gettingstarted tab (not shown), a summary tab 802, a monitor tab 804, a managetab 806, a related items tab 808, a legacy tab (not shown), and anaction menu (not shown in FIG. 8) of user interface 402. In addition,applications 306 ₁-306 _(N) may provide one or more application-specificviews 524, such as tabs, menus, or portlets, as plugins or extensions toobject model 406 at an application-specific extension level 510. In anembodiment, object model views 801 are positioned within data panel 604.In the embodiments shown in FIGS. 6-11, the getting started tab and thelegacy tab are not displayed by user interface 402. Application-specificviews 524 are also positioned within data panel 604 and below objectmodel views 801.

The getting started tab provides an introduction to a selected node 302(i.e., a node 302 selected within navigation panel 602), such as hownode 302 fits into application 306 ₁ and how node 302 is used. The tabalso provides links to common tasks or actions associated with node 302.

Summary tab 802 includes summary view 516 and provides identificationinformation for a selected node 302 and identifies any issues or eventsrequiring attention. In an embodiment, the identification informationincludes high level data that enables a user to uniquely identify node302. The high level data includes properties such as the name of node302, user-readable globally unique identifier (GUID) such as a hostnameor internet protocol (IP) address, and life-cycle properties of node302, such as a creation date of node 302. Summary tab 802 also includesstatus information for the selected node 302, such as visualrepresentations of resource utilization data for node 302.

In an embodiment, the issues identified by summary tab 802 include highpriority identified misconfigurations of node 302 and/or notificationsthat require immediate attention of a user. In addition, other suitabledata may be shown on summary tab 802, and may be disabled or removed bythe user if the data is not desired.

Referring to FIG. 9, monitor tab 804 includes monitor view 518 anddisplays node information for a selected or anchor node 302. In anembodiment, the node information includes runtime data describing acurrent operation of node 302, and/or historical data (not shown) foroperation of node 302 in the past. For example, the runtime data mayinclude a power state of a VM 235 ₁-235 _(N), a distributed resourcescheduler (DRS) recommendation for a cluster (not shown), a connectionstate of a host computing device 100, and/or performance and alarm datafor node 302. The historical data may include one or more logs, tasks,and/or events.

In an embodiment, monitor tab 804 includes a plurality ofapplication-specific views 524 defined by object model 406 and/or by oneor more applications 306 ₁-306 _(N), such as the focused application 306₁. Monitor tab 804 may include application-specific views 524 that aredisplayed in, for example, an issues tab 902 for displaying issuesaffecting or associated with node 302. Monitor tab 804 may also includea performance tab 904 for displaying performance data related to a pastactivity of node 302, resource consumption data (i.e., how node 302 isusing the resources allocated to node 302, if applicable), and/orprofile performance data (e.g., how node 302 is performing relative tothe profiles and health status set for node 302). In addition, monitortab 804 may include a task tab 906 for displaying a long term record oftasks for node 302, and an event tab 908 for displaying a long termrecord of events on node 302 and/or one or more logs for node 302. Anapplication, such as focused application 306 ₁, may add or insert one ormore application-specific tabs 910 to display application-specific data,configuration settings, and/or actions for node 302. If any data formonitor tab 804 is not relevant for a selected node 302, it may beremoved or hidden.

It should be recognized that node information displayed within monitortab 804 (e.g., displayed within application-specific views 524 and/ordisplayed within other views 801 defined by object model 406) may bewithin the context of one or more other applications 306 ₂-306 _(N) inaddition to, or instead of, the focused application 306 ₂-306 _(N). Morespecifically, the node information displayed may be a part of theperspective of one or more other applications 306 ₂-306 _(N) in additionto, or instead of the perspective of the focused application 306 ₁.Accordingly, monitor tab 804 and/or other views 801 defined by objectmodel 406 enables the focused application 306 ₁ to receive and displaynode information for the selected node 302 from other applications 306₂-306 _(N) without changing or leaving the focus of the currentlyfocused application 306 ₁.

Referring to FIG. 10, manage tab 806 includes management properties ofnode 302 that affect how node 302 operates in system 300. The managementproperties are static properties that do not change unless the user or apolicy changes them. In an embodiment, the management properties includeresource allocation properties, node settings, profile definitions,alarm definitions, physical resource node properties (also known as“backing object properties”), tags, permission settings, and/or anyother property or setting that enables manage tab 806 to function asdescribed herein.

Resource allocation properties are configurable settings related to theresource types (if applicable) that node 302 exposes to related consumernodes 302. Node settings include direct mutable properties of node 302,such as virtual hardware platform 240 ₁-240 _(N) (shown in FIG. 2) of aVM 235 ₁-235 _(N), and/or DRS settings of a cluster (not shown). Profiledefinitions identify any profile assigned to node 302 and, in someembodiment, enables the user to override the profile settings for node302.

In addition, alarm definitions enable a user to define alarms for theselected node 302. Resource provision node properties display data forrelated nodes 302 that provide resources to the selected node 302. In anembodiment, tags include metadata that the user selects to identify orannotate the selected node 302, such as custom attributes and notes(e.g., descriptions of node 302). Permission settings identify whichusers and/or devices have authority to view or change the settingsand/or properties of node 302. If one or more of the above properties orsettings is not relevant to a given node type, it may be removed orhidden.

Referring to FIG. 11, related items tab 808 displays all or a portion ofnodes 302 that related to the selected node 302 (i.e., all or a portionof nodes 302 sharing at least one edge 304 with selected node 302). Morespecifically, related items tab 808 identifies one or more edgecategories 712, and displays all nodes 302 that share an edge 304 inedge categories 712 with the selected node 302. In addition, for eachrelated node displayed in related items tab 808, one or more columns1101 of node information is displayed. In some embodiments, columns 1101of node information are selected based on the node type of the selectednode 302 and/or the node type of the related nodes 302.

Columns 1101 may also be extended by application 306 ₁ such that relateditems tab 808 includes one or more application-specific columns 1101 ofnode information. Such columns 1101 represent one or more edgecategories 712 of selected node 302. For example, if the Hosts tab 1102is selected as illustrated in FIG. 11, all nodes 302 related to selectednode 302 by edge category 712 (e.g., all nodes 302 that have a node typeset to host computing device 100) are displayed.

It should be recognized that related nodes 302 displayed within relateditems tab 808 may be within an application boundary 310 of one or moreother applications 306 ₂-306 _(N) in addition to, or instead of, thefocused application 306 ₁. Accordingly, related items tab 808 enablesthe focused application 306 ₁ to receive and display node informationfor the selected node 302 from other applications 306 ₂-306 _(N) (i.e.,from the perspective of other applications 306 ₂-306 _(N)) withoutswitching or changing the focus away from the currently focusedapplication 306 ₁.

In each view 801 defined by object model 406 and displayed by userinterface 402, one or more actions to be performed on the selected node302 may be displayed in an action menu 1104 or tab. When a node 302 isdisplayed in a view 801, the full set of actions available to beperformed on the selected node 302 is available to the user in actionmenu 1104. More specifically, actions from each application 306 ₁-306_(N) perspective are available to the user for the selected node 302within the context of the focused application 306 ₁. However, thecontext of the focused application 306 ₁ may define which actions aredisplayed to the user for selection.

As described herein with reference to FIGS. 6-11, each application 306₁-306 _(N) is represented by one or more high-level inventories 512 innavigation panel 602. Inventories 512 are “jumping off points” orsecondary entry points for workflows and views that display andmanipulate nodes 302 of system 300 that applications 306 ₁-306 _(N)share between each other.

A user or an administrator begins a workflow at an entry point 504and/or inventory 512 for a selected (i.e., focused) application 306 ₁.The user or administrator progresses through the workflow by navigatingthrough hierarchy 500 to specific views 801 and nodes 302. The views 801of a selected node 302 show the perspective of application 306 ₁ fornode 302 (e.g., node information), as well as the perspectives of allother applications 306 ₂-306 _(N) that encompass node 302 withinapplication boundaries 310. Because the node information for allapplications 306 ₁-306 _(N) is displayed and/or available in the detailsof node 302 within the views 801, the focused application 306 ₁ is savedfrom duplicating common data of node 302 that is provided by otherapplications 306 ₂-306 _(N).

After arriving at a particular view 801 or node 302, the administratorcan conclude the workflow by manipulating node 302 (e.g., actionsassociated with node 302) for the originating application 306 ₁, or foranother application 306 ₂-306 _(N) as needed. In one embodiment, node302 is manipulated by changing data, at least one configuration setting,and/or at least one action for node 302, for example, that is displayedin data panel 604. By allowing an administrator to easily view andconfigure settings or perform actions for multiple applications 306₁-306 _(N) without having to leave a single node view 801, userinterface 402 effectively switches from one application 306 ₁ to anotherapplication 306 ₂-306 _(N) without having to change user interfaces 402or applications 306 ₁-306 _(N). This approach achieves a very highdegree of integration that greatly improves administration efficiency.

FIG. 12 is a flowchart of an exemplary method 1200 for installing, oradding, an application 306 ₁-306 _(N) (shown in FIG. 3) withininfrastructure 401 (shown in FIG. 4). Method 1200 is executed by acomputing device 100 (shown in FIG. 1). For example, a plurality ofcomputer-executable instructions is embodied within a computer-readablemedium, such as memory 104 or memory 250. The instructions, whenexecuted by a processor, such as processor 102 or processor 245, causethe processor to execute the steps of method 1200 and/or to function asdescribed herein.

In an embodiment, method 1200 optionally includes defining 1202 at leastone new node type for use with a new application 306 ₁ to be installed,or added, within infrastructure 401 (shown in FIG. 4). The new node typedefinition includes, for example, a list of all actions available to beperformed on nodes 302 (shown in FIG. 3) of the new node type, a list ofdata and/or data types associated with nodes 302 of the new node type,and/or a list of configuration settings associated with nodes 302 of thenew node type.

A plurality of nodes 302 associated with application 306 ₁ (e.g., withina boundary 310 of application 306 ₁) is added 1204 to system 300 (shownin FIG. 3) and/or infrastructure 401. The plurality of nodes 302associated with application 306 ₁ is also referred to as a subset 308(shown in FIG. 3) of nodes 302 within application boundary 310. Inaddition, nodes 302 that are added 1204 to system 300 by application 306₁ may be of the new node type and/or of node types pre-defined byapplication model 404, object model 406, and/or other applications 306₂-306 _(N). The added nodes 302 are connected together by at least oneedge 304 such that each node 302 is connected to at least one other node302.

Edge categories 712 (shown in FIG. 7) are defined 1206 for each node 302within subset 308 and are added to infrastructure 401. In an embodiment,application 306 ₁ may define new edge categories 712, or use existingedge categories 712 that have been defined and/or used within system300. In addition, an application perspective is defined 1208 for eachnode 302 of subset 308. In an embodiment, the perspective includes nodeinformation such as data, actions, and/or configuration settings for anode 302.

Subset 308 of nodes 302 is connected 1210 to other nodes 302 in system300 by one or more edges 304 such that nodes 302 are integrated intosystem 300. An entry point 504 (shown in FIG. 5) for application 306 ₁is identified 1212 and is added 1214 to at least one view defined byapplication model 404 (and to hierarchy 500 (shown in FIG. 5)). In anembodiment, an application extension, such as entry point 504, is added1214 to navigation panel 602 (shown in FIG. 6) at a selectable level ofhierarchy 500 within views 801 defined by application model 404. Theview 801 in which entry point 504 is added 1214 provides entry point 504to a user along with at least one other entry point 504 from at leastone other application 306 ₂-306 _(N). Alternatively, application 306 ₁does not include an entry point 504, and steps 1212 and 1214 areomitted.

At least one perspective is added 1216 to at least one view 801 definedby object model 406 and displayed by user interface 402 for each addednode 302 such that the added perspective is provided to the user by view801 along with at least one other perspective from at least one otherapplication 306 ₂-306 _(N). In addition or alternatively, at least oneaction is added 1218 to at least one action menu 1104 (shown in FIG. 11)defined by object model 406 such that the added action is provided tothe user by action menu 1104 along with at least one other action fromat least one other application 306 ₂-306 _(N). In some embodiments, theactions associated with the installed application 306 ₁ nodes 302 and/ornode types are added 1218 to each action menu 1104 defined by objectmodel 406. Alternatively, no actions are added 1218 to a view 801 and/oran action menu 1104 such that only at least one perspective is added1216 to at least one view 801.

In one embodiment, if application 306 ₁ defines 1202 a new node type,application 306 ₁ also defines the actions and/or data that takeprecedence when displaying the new type of node 302. In doing so,applications 306 ₁-306 _(N) can specify which actions and/or data areappropriate or most relevant for a type of node 302 in the context of afocused node 302. For example, if a datastore node 302 includes a listof VMs 235 ₁-235 _(N) inside of node 302, the actions and data (e.g.,columns 1101 (shown in FIG. 11)) that are displayed for the list of VMs235 ₁-235 _(N) are relevant to storage. In addition, application 306 ₁creates views 801 (e.g., to display node information) that areextensible such that other applications 306 ₂-306 _(N) may add data,configuration settings, and/or actions to the created views.

FIGS. 13-15 are additional exemplary screen captures of user interface402 including a plurality of views implemented by applications 306 ₁-306_(N) (shown in FIG. 3) using infrastructure 401 (shown in FIG. 4).

Referring to FIG. 13, an anchor node 1301 is displayed within navigationpanel 602, and edge categories 712 associated with anchor node 1301 arealso displayed within navigation panel 602. More specifically, edgecategories 712 are displayed and/or determined by the node type ofanchor node 1301 such that different edge categories 712 are displayedfor different node types.

Data associated with anchor node 1301 is displayed in data panel 604when anchor node 1301 is selected within navigation panel 602. The dataassociated with anchor node 1301 is displayed in one or more views 801as described above with reference to FIGS. 6-11. In addition, whenanchor node 1301 is selected within navigation panel 602, a firstapplication 306 ₁ (shown in FIG. 3) displays a first set of data 1302associated with anchor node 1301 within data panel 604 (e.g., withinview 801) and a second application 306 ₂ displays a second set of data1304 associated with anchor node 1301 within data panel 604 (e.g.,within view 801).

Referring to FIG. 14, when a user selects an edge category 712 foranchor node 1301, using user input device 110, a plurality of relatednodes 1401 is identified and displayed within navigation panel 602.Related nodes 1401 are related to anchor node 1301 by an edge 304 (shownin FIG. 3) of the selected edge category 712. If the user selects arelated node 1402 in navigation panel 602, data associated with theselected related node 1402 is displayed in data panel 604. In oneembodiment, anchor node 1301 has a node type defined by a firstapplication 306 ₁ and selected related node 1402 has a node type definedby a second application 306 ₂.

In addition, a new anchor node 1301 may be selected using options oractions provided in one or more views 801 of data panel 604. Forexample, the related node 1402 selected within navigation panel 602 maybe selected as the new anchor node 1301 using options or actionsprovided in data panel 604.

Referring to FIG. 15, a user changes or switches a focus, or anchor node1301, of navigation panel 602 to a related node 1402 (shown in FIG. 14)by inputting a command into navigation panel 602 or data panel 604. Anedge category 712 of anchor node 1301 and an edge category of relatednode 1402 may be identified. In one embodiment, at least one edgecategory 712 of anchor node 1301 is different than edge category 712 ofrelated node 1402. For example, as illustrated in FIG. 14, anchor node1301 includes an edge category 712 of “virtual machines,” and asillustrated in FIG. 15, the related node 1402 (i.e., the new anchor node1301) includes an edge category 712 of “datastores” and/or may includeany other edge category 712.

In an embodiment, navigation panel 602 is animated when switching thefocus of navigation panel 602 from anchor node 1301 to related node1402. More specifically, the animation includes causing navigation panel602 to slide or be displaced to a side such that a representation ofrelated node 1402 and edge category 712 associated with related node1402 slide in to replace a representation of anchor node 1301 and edgecategory 712 associated with anchor node 1301. Anchor node 1301 and edgecategory 712 associated with anchor node 1301 slide out and are notdisplayed by navigation panel 602. Data associated with the new anchornode 1301 is displayed within data panel 604 when the new anchor node1301 is selected by the user.

FIG. 16 is a block diagram of an application 306 ₁ including a pluralityof computer-executable components 1602. It should be recognized thatother applications 306 ₂-306 _(N) (shown in FIG. 3) include similarcomponents 1602 that function as described herein.

In an embodiment, application 306 ₁ may implement extensions describedherein using components # to add to, or extend, user interface 402 atone or more levels of hierarchy 500 (shown in FIG. 5). Components 1602may include an edge category component 1604 for adding an edge category712 to infrastructure 401 and an application or view extension component1606 for adding a view extension to user interface 402 (e.g., for addingapplication-specific views 524 to data panel 604). Components 1602 mayalso include an entry point component 1608 for adding entry points 504to infrastructure 401 and/or system 300, and a node component 1610 foradding node types and/or nodes 302 to infrastructure 401 and/or system300 and for connecting nodes 302 together. An application perspectivecomponent 1612 may also be included within applications 306 ₁-306 _(N)for adding perspectives for each added node 302 and/or for pre-existingnodes 302.

As described herein, system 300 includes a plurality of applications 306₁-306 _(N). Each application 306 ₁-306 _(N) defines at least one edgecategory 712 and provides at least one view extension to extend, or addto, the functionality of system 300 and/or infrastructure 401. System300 also includes a plurality of nodes 302 that each has a node type. Inone embodiment, application 306 ₁-306 _(N) defines the node type foreach node 302 within a boundary 310 of application 306 ₁-306 _(N). Eachnode 302 is connected to at least one other node 302 by an edge 304 inan edge category 712 associated with the type of node 302. In addition,system 300 includes a virtual machine infrastructure 401 including auser interface 402 for displaying data from the view extension of eachapplication 306 ₁-306 _(N).

User interface 402 is accessed by a user to navigate, in a tabularformat (see, e.g., FIGS. 6-11), a graph formed by the plurality of nodes302 (e.g., system 300) connected by edges 302. In some embodiments, userinterface 402 simultaneously displays data from view extensions of twoor more applications 306 ₁-306 _(N). The data displayed is associatedwith an anchor node 1301 (i.e., a node 302 that is the focus ofnavigation panel 602 and/or user interface 402).

In the embodiments described herein, user interface 402 includes anentry point level including at least one extension (such an entry point504) added by an application 306 ₁. Data of the extension added at theentry point level by application 306 ₁ is displayed in presentationdevice 106 to a user when user interface 402 is initially accessed bythe user. User interface 402 also includes an inventory level 506 havingat least one extension added by application 306 ₁. Data of the extensionadded at inventory level 506 by application 306 ₁ is displayed to theuser when the user selects an extension at the entry point levelcorresponding to the extension at inventory level 506.

In addition, user interface 402 includes a category extension level 508having at least one extension added by application 306 ₁. Data of anextension added at category extension level 508 by application 306 ₁ isdisplayed to the user when the user focuses user interface 402 (e.g.,navigation panel 602) on a node 302 displayed by an extension added atinventory level 506. Category extension level 508 includes a pluralityof tabs or views 801 under which an extension added by application 306 ₁displays data of the extension. In an embodiment, user interface 402includes an application-specific extension level 510 having at least oneextension added by application 306 ₁. Data of an application-specificextension is displayed to the user when the user focuses user interface402 on a node 302 having data of the application-specific extensionassociated with node 302.

In an embodiment, each level 502 of user interface 402 may beimplemented by, or embodied within, an associated computer-readablecomponent. Each computer-readable component is executed by a processorto perform the functions described herein.

Exemplary Operating Environment

The extensible infrastructure as described herein may be performed by acomputer or computing device. A computer or computing device may includeone or more processors or processing units, system memory, and some formof computer-readable media. Exemplary computer-readable media includeflash memory drives, digital versatile discs (DVDs), compact discs(CDs), floppy disks, and tape cassettes. By way of example and notlimitation, computer-readable media comprise computer storage media andcommunication media. Computer storage media store information such ascomputer-readable instructions, data structures, program modules, orother data on tangible, physical media. Communication media typicallyembody computer-readable instructions, data structures, program modules,or other data in a modulated data signal such as a carrier wave or othertransport mechanism and include any information delivery media.Combinations of any of the above are also included within the scope ofcomputer-readable media.

Although described in connection with an exemplary computing systemenvironment, embodiments of the disclosure are operative with numerousother general purpose or special purpose computing system environmentsor configurations. Examples of well known computing systems,environments, and/or configurations that may be suitable for use withaspects of the disclosure include, but are not limited to, mobilecomputing devices, personal computers, server computers, hand-held orlaptop devices, multiprocessor systems, gaming consoles,microprocessor-based systems, set top boxes, programmable consumerelectronics, mobile telephones, network PCs, minicomputers, mainframecomputers, distributed computing environments that include any of theabove systems or devices, and the like.

Embodiments of the disclosure may be described in the general context ofcomputer-executable instructions, such as program modules, executed byone or more computers or other devices. The computer-executableinstructions may be organized into one or more computer-executablecomponents or modules. Generally, program modules include, but are notlimited to, routines, programs, objects, components, and data structuresthat perform particular tasks or implement particular abstract datatypes. Aspects of the disclosure may be implemented with any number andorganization of such components or modules. For example, aspects of thedisclosure are not limited to the specific computer-executableinstructions or the specific components or modules illustrated in thefigures and described herein. Other embodiments of the disclosure mayinclude different computer-executable instructions or components havingmore or less functionality than illustrated and described herein.

Aspects of the disclosure transform a general-purpose computer into aspecial-purpose computing device when programmed to execute theinstructions described herein.

The operations illustrated and described herein may be implemented assoftware instructions encoded on a computer-readable medium, in hardwareprogrammed or designed to perform the operations, or both. For example,aspects of the disclosure may be implemented as a system on a chip.

The order of execution or performance of the operations in embodimentsof the disclosure illustrated and described herein is not essential,unless otherwise specified. That is, the operations may be performed inany order, unless otherwise specified, and embodiments of the disclosuremay include additional or fewer operations than those disclosed herein.For example, it is contemplated that executing or performing aparticular operation before, contemporaneously with, or after anotheroperation is within the scope of aspects of the disclosure.

When introducing elements of aspects of the disclosure or theembodiments thereof, the articles “a,” “an,” “the,” and “said” areintended to mean that there are one or more of the elements. The terms“comprising,” “including,” and “having” are intended to be inclusive andmean that there may be additional elements other than the listedelements.

Having described aspects of the disclosure in detail, it will beapparent that modifications and variations are possible withoutdeparting from the scope of aspects of the disclosure as defined in theappended claims. As various changes could be made in the aboveconstructions, products, and methods without departing from the scope ofaspects of the disclosure, it is intended that all matter contained inthe above description and shown in the accompanying drawings shall beinterpreted as illustrative and not in a limiting sense.

What is claimed is:
 1. A computing device comprising a processorconfigured to implement an extensible user interface for navigating, ina display of the computing device, a graph in a tabular format, theextensible user interface arranged in a hierarchy of views, thehierarchy comprising: an entry point level having at least one extensionadded by an application, said application operating on a computerprocessor, said application configured to monitor a plurality of nodesrepresentative of at least one system object wherein said system objectsinclude at least one virtual or physical computing devices wherein dataof an extension added at the entry point level by an application isdisplayed in a said display of said computing device to a user when theextensible user interface is initially accessed by the user; aninventory level having at least one extension added by the application,wherein data of an extension added at the inventory level by theapplication is displayed to the user when the user selects an extensionat the entry point level corresponding to the extension at the inventorylevel; and a category extension level having at least one extensionadded by an application, wherein data of an extension added at thecategory extension level by the application is displayed to the userwhen the user focuses the extensible user interface on a node displayedby an extension added at the inventory level wherein a plurality ofapplications have added extensions to at least one level of theextensible user interface, wherein data associated with the plurality ofapplications for a first node of the plurality of nodes is displayed tothe user in said display of said computing device in a single view atthe at least one level of the extensible user interface, wherein thedata associated with the plurality of applications for the first node isconfigured by the user using the single view of the at least one levelof the extensible user interface.
 2. The computing device of claim 1,wherein the hierarchy further comprises an application-specificextension level having at least one extension added by the application,wherein data of an application-specific extension is displayed to theuser when the user focuses the extensible user interface on at least oneof said plurality of nodes having data of the application-specificextension associated with the node of said at least one of saidplurality of nodes.
 3. The computing device of claim 1, wherein thecategory extension level has a plurality of tabs under which anextension added by an application shows data of the extension.
 4. Thecomputing device of claim 3, wherein data of the extension is shownunder one of the plurality of tabs.
 5. A computer readable storage mediahaving computer executable instructions for implementing an extensibleuser interface for navigating, in a display of a computing device, agraph in a tabular format, the extensible user interface arranged in ahierarchy of views, the hierarchy comprising: an entry point levelcomponent having at least one extension added by an application, saidapplication operating on a computer processor, said applicationconfigured to monitor a plurality of nodes representative of at leastone system object wherein said system objects include at least onevirtual or physical computing devices wherein data of an extension addedat the entry point level by an application is displayed in said displayof said computing device to a user when the extensible user interface isinitially accessed by the user; an inventory level component having atleast one extension added by the application, wherein data of anextension added at the inventory level by the application is displayedto the user when the user selects an extension at the entry point levelcorresponding to the extension at the inventory level; and a categoryextension level component having at least one extension added by anapplication, wherein data of an extension added at the categoryextension level by the application is displayed to the user when theuser focuses the extensible user interface on a node displayed by anextension added at the inventory level wherein a plurality ofapplications have added extensions to at least one level of theextensible user interface, wherein data associated with the plurality ofapplications for a first node of the plurality of nodes is displayed tothe user in said display of said computing device in a single view atthe at least one level of the extensible user interface, wherein thedata associated with the plurality of applications for the first node isconfigured by the user using the single view of the at least one levelof the extensible user interface.
 6. The computer readable storage mediaof claim 5, wherein the hierarchy further comprises anapplication-specific extension level component having at least oneextension added by the application, wherein data of anapplication-specific extension is displayed to the user when the userfocuses the extensible user interface on at least one of said pluralityof nodes having data of the application-specific extension associatedwith the node of said at least one of said plurality of nodes.
 7. Thecomputer readable storage media of claim 5, wherein the categoryextension level component has a plurality of tabs under which anextension added by an application shows data of the extension.
 8. Thecomputer readable storage media of claim 7, wherein data of theextension is shown under one of the plurality of tabs.